Java怎样创建两个KEY的MAP

Question

如题所述

Answer 1

public static void main(String[] args) {
Map<String,Map<String,Object>> map = new HashMap<String,Map<String,Object>>();
Map<String,Object> mapMin = new HashMap<String,Object>();
mapMin.put("key2", "这是通过两个Key才能拿到的值");
map.put("key1", mapMin);

for (String key1 : map.keySet()) {
for (String key2 : map.get(key1).keySet()) {
System.out.println(map.get(key1).get(key2));
}
}
}

这应该看明白了吧 希望能帮到你！